While you stated the pluses of the S7 for you, what made you decide to make a change in the first place? Also, how long have you used the devices?
I've found that in the past when I've tried to use Android devices I would be amazed with the device the first day and by the second day I would immediately want to return the device. Mostly because things were different and I just wanted to go back what I knew. Which is odd because one of my reasons for picking up an Android phone was because I wanted a change.
I did read that you've already gone back to the iPhones, but I'm just curious as to what prompted you to pick up the S7's as you already have the 6s which is still a top phone.
I guess I thought the grass was greener, just wanted a change also. After reading about the upcoming iPhone 8, I decided it might be better to wait. Also I own Mac and Apple TV, so I have investments. I did like the S7 edge, but not enough to spend the money.